const express = require('express');
const path = require('path');
const fs = require('fs');
const database = require('./lib/database');
const imageFetcher = require('./lib/image-fetcher');
const imagesRouter = require('./routes/images');

const app = express();
const PORT = process.env.PORT || 3001;
const DOMAIN = process.env.DOMAIN || 'homebase.sketchferret.com';

// Middleware
app.use(express.json());
app.use(express.static(path.join(__dirname, 'public')));

// Initialize database
database.initializeDatabase().catch(err => {
  console.error('Failed to initialize database:', err);
  process.exit(1);
});

// API Routes
app.use('/api', imagesRouter);

// Status endpoint
app.get('/api/status', (req, res) => {
  res.json({
    message: 'HomeBase is running!',
    domain: DOMAIN,
    timestamp: new Date().toISOString(),
    version: '1.0.0',
    features: {
      imageStorage: true,
      tagging: true,
      corruptionDetection: true
    }
  });
});

// Health check
app.get('/health', (req, res) => {
  res.json({ status: 'healthy' });
});

// Start server
const server = app.listen(PORT, '0.0.0.0', () => {
  console.log(`\n🏠 HomeBase Server Started`);
  console.log(`   Port: ${PORT}`);
  console.log(`   Domain: ${DOMAIN}`);
  console.log(`   URL: http://${DOMAIN}\n`);

  // Load configuration from image-sources.json
  const configPath = path.join(__dirname, 'image-sources.json');
  let config = { sources: [], fetchInterval: 2.5 };

  try {
    if (fs.existsSync(configPath)) {
      const fileContent = fs.readFileSync(configPath, 'utf8');
      config = JSON.parse(fileContent);
    }
  } catch (err) {
    console.warn('⚠️  Could not read image-sources.json:', err.message);
  }

  const imageSources = config.sources || [];
  const fetchInterval = config.fetchInterval || 2.5;

  // Start image fetcher if sources are configured
  if (imageSources.length > 0) {
    const enabledSources = imageSources.filter(s => s.enabled);
    if (enabledSources.length > 0) {
      imageFetcher.startFetcher(enabledSources, fetchInterval);
      console.log(`📸 Image fetcher: Enabled (${fetchInterval} minute interval)\n`);
    } else {
      console.log('📸 Image fetcher: Disabled (no enabled sources in config)');
      console.log('   Edit image-sources.json and set "enabled": true to enable\n');
    }
  } else {
    console.log('📸 Image fetcher: No sources configured');
    console.log('   Edit image-sources.json to add image sources\n');
  }
});

// Graceful shutdown
process.on('SIGTERM', () => {
  console.log('\n📴 Shutting down gracefully...');
  imageFetcher.stopFetcher();
  server.close(async () => {
    await database.closeDatabase();
    process.exit(0);
  });
});

process.on('SIGINT', () => {
  console.log('\n📴 Shutting down gracefully...');
  imageFetcher.stopFetcher();
  server.close(async () => {
    await database.closeDatabase();
    process.exit(0);
  });
});